JPS5460443A - Reflow power supply control system - Google Patents
Reflow power supply control systemInfo
- Publication number
- JPS5460443A JPS5460443A JP12775377A JP12775377A JPS5460443A JP S5460443 A JPS5460443 A JP S5460443A JP 12775377 A JP12775377 A JP 12775377A JP 12775377 A JP12775377 A JP 12775377A JP S5460443 A JPS5460443 A JP S5460443A
- Authority
- JP
- Japan
- Prior art keywords
- reflow
- chip
- peak
- value
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To accomplish accurate control of temperature of a reflow chip by controlling the phase angle in energization within the range of maintaining the peak of the AC voltage fed to the chip at a constant value by a deviation between the peak value and the set value of the output voltage.
CONSTITUTION: A control is made in the temperature of a reflow chip 2 applied to a reflow connection for bonding fine wires to a printed board. In heating the reflow chip with an AC current AC fed thereto through a thyrister 7, a comparison is made by means of a comparator between the set value and a peak value which is obtained from application of voltage detected across ends of the reflow chip to a peak value detecting means 4 through an amplifier 3. The resulting deviation is used to control the phase angle in the energization of a thyristor through a thyrister controller 6 within such a range that the peak of the AC current fed to the reflow chip can be maintained at a constant value. In this manner, the temperature of the reflow chip can be controlled accurately
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12775377A JPS5460443A (en) | 1977-10-24 | 1977-10-24 | Reflow power supply control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12775377A JPS5460443A (en) | 1977-10-24 | 1977-10-24 | Reflow power supply control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5460443A true JPS5460443A (en) | 1979-05-15 |
Family
ID=14967825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12775377A Pending JPS5460443A (en) | 1977-10-24 | 1977-10-24 | Reflow power supply control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5460443A (en) |
-
1977
- 1977-10-24 JP JP12775377A patent/JPS5460443A/en active Pending
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